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Device and method for improving laser connection strength of metal part and plastic part

A technology for connection strength and metal parts, which is applied in the field of devices for improving the laser connection strength of metal parts and plastic parts, can solve the problems of low quality joints between metal parts and plastic parts, increase the probability of chemical bonding formation, and promote mechanical fitting , The effect of scanning speed optimization

Pending Publication Date: 2022-04-29
国家高速列车青岛技术创新中心
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] In order to solve the connection problem of low-quality joints between metal parts and plastic parts in the prior art, the present invention provides a device and method for improving the laser connection strength of metal parts and plastic parts

Method used

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  • Device and method for improving laser connection strength of metal part and plastic part
  • Device and method for improving laser connection strength of metal part and plastic part
  • Device and method for improving laser connection strength of metal part and plastic part

Examples

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Embodiment 1

[0052] A method for improving the laser connection strength of a metal part and a plastic part. The metal part is 304 stainless steel; the plastic part is carbon fiber reinforced nylon (CF-PA6).

[0053] (1) Pre-treat the surface of the metal parts; place the 304 stainless steel substrate to be connected in a mixed solution composed of 80% distilled water + 15% nitric acid + 5% hydrofluoric acid to clean for 30 seconds to remove the surface oxide film and then blow it with a hair dryer Dry, put the CF-PA6 board to be connected in an ultrasonic cleaning container, wash it with a mixed solution of 50% acetone + 50% alcohol for 180s, and then put the cleaned CF-PA6 board in an 80°C drying oven for 24 hours;

[0054] (2) Utilize the 304 stainless steel substrate 11 processed above figure 1 As shown in the clamping method, use the motor to move the mobile platform 9 to the center of the cylinder 18 and align it with the center line of the mobile platform 9, center the laser claddin...

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Abstract

The invention relates to the field of metal and plastic connection, and discloses a method for improving the laser connection strength of a metal piece and a plastic piece, and the method comprises the following steps: (1) pretreating the surface of the metal piece; (2) enabling an incident light beam of a laser to correspond to a to-be-processed position of the metal; (3) the laser and the coaxial powder feeder are started to deposit the protruding microtextures on the surface of the metal piece, and the metal piece with the protruding microtextures on the surface is obtained; (4) placing the metal piece with the convex micro-texture obtained in the step (3) above the plastic piece, wherein one side of the convex micro-texture of the metal is attached to the plastic; (5) applying pressure to the joint of the metal piece and the plastic piece; and (6) carrying out laser connection on the metal piece and the plastic piece. The connecting problem that the connecting joint of the metal piece and the plastic piece is low in quality is solved, the conception is ingenious, the design is reasonable, and the adaptability is high.

Description

technical field [0001] The invention relates to the field of connection of dissimilar materials, in particular to a device and method for improving the strength of laser connection between metal parts and plastic parts. Background technique [0002] With the gradual increase in the demand for lightweight structures in advanced manufacturing industries such as automobiles, rail transit, and aerospace, the connection of heterogeneous lightweight materials has become a hot spot for lightweighting. Through the composite of plastic and metal, the heterogeneous structure has the characteristics of light weight, high strength and impact resistance. Realizing the high-quality connection of two materials has great advantages and application prospects for realizing lightweight. [0003] The weak part of this composite structure is often at the connection joint, which means that the quality of the joint directly determines the service life of the composite structure. The connection b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C65/16
CPCB29C65/16B29C66/00141B29C66/028B29C66/0222B29C66/742B29C66/8242B29C66/90
Inventor 檀财旺刘一凡牛得田周宝升宋晓国
Owner 国家高速列车青岛技术创新中心
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